JP4402442B2 - Indoor atmosphere detector - Google Patents

Description

  The present invention relates to an indoor atmosphere detector, and more particularly to an indoor atmosphere detector that is attached to an indoor mounting surface (a wall surface or a side surface of a column) and detects physical quantities such as indoor temperature, humidity, gas, and smoke. is there.

  As a type of indoor atmosphere detector, an indoor temperature detector used for indoor air conditioning control is known. This type of indoor temperature detector is usually mounted at a height of 1.5 m above the floor, which shows the average indoor temperature, with the wall surface of the room or the side surface of the column as the mounting surface.

  Since such an indoor type temperature detector is mounted indoors, it is desired to be formed as thin as possible in order to reduce the projecting dimension from the mounting surface. On the other hand, the detection accuracy of the indoor temperature detector decreases when it is affected by disturbances such as water pipes that pass through the walls or columns that serve as mounting surfaces, or cold air, hot air from the duct, and radiant heat from the sun. Therefore, it is necessary to increase the thickness of the detector so that the detection element is as far as possible from the mounting surface. In this case, if two types of detectors having different thicknesses are manufactured, the manufacturing cost increases, and there is a problem that management is troublesome because management by model is required due to an increase in the number of models.

  Therefore, conventionally, as shown in FIG. 10, when attaching the indoor type temperature detector 2 to the indoor mounting surface 1, the detection element 4 inside the mounting detector is separated from the mounting surface 1 using the pedestal 3. The influence of disturbances such as cold air and hot air from the mounting surface 1 and radiant heat from the sun is reduced. 5 is a printed wiring board, and 6 is an external code. Reference numeral 7 denotes a front cover, 8 denotes a case main body, and 9 denotes a base plate, and these constitute the indoor atmosphere detector 2. The applicant has not been able to find prior art documents related to the present invention by the time of filing. Therefore, prior art document information is not disclosed.

  However, since it has been found that the conventional indoor temperature detector 2 shown in FIG. 10 is greatly affected by disturbance in the state where the pedestal 3 is not used, the pedestal 3 is attached to the base plate 9 and the case body 8. When it is necessary to interpose between the two, there is a problem that the work is troublesome and takes time. That is, the work procedure in such a case will be described as follows. First, power supply to a load device (for example, a compressor) such as an air conditioner controlled by a controller is turned off, and then the front cover 7 of the indoor temperature detector 2 is removed. Further, the case body 8 is removed from the base plate 9. Next, the external cord 6 is disconnected from the terminal 10 of the case body 8, and the pedestal 3 is fixed to the base plate 9. Next, after the external cord 6 is inserted into the base 3 and pulled out forward and reconnected to the terminal 10, the case body 8 is fixed to the base 3. Thereafter, the front cover 7 is attached to the case main body 8, and the attaching operation of the temperature detector 2 is completed.

  In this way, when the pedestal 3 is interposed between the base plate 9 and the case main body 8 to increase the projecting dimension from the mounting surface 1 of the temperature detector 2, the external cord 6 is inserted into the pedestal 3 made of a frame. Since it is necessary to remove the external cord 6 from the terminal 10 and fix the pedestal 3 to the base plate 9, it is necessary to connect the terminal 10 to the terminal 10 again.

  Therefore, the present inventors have examined what structure should be used to increase the protruding dimension of the detector without temporarily disconnecting the external cord 6 from the case body 8 in particular, and as a result, the case body is used as the base plate. On the other hand, when a protrusion dimension changing member for selectively variably setting the protrusion dimension from the mounting surface of the case main body is incorporated in the case main body or the base plate in advance so as to be movable in the front-rear direction, the external cord 6 is connected to the case main body 8. It has been found that the protruding dimensions of the detector can be changed easily and quickly without disconnecting from the detector.

In order to achieve the above object, a first invention includes a base plate attached to an indoor attachment surface, a case main body attached to the base plate, a detection element assembled to the case main body, and a front surface covering the front surface of the case main body. In the indoor atmosphere detector including a cover, the case body is attached to the base plate so that the position of the case body can be adjusted in the front-rear direction, and two protrusions for selectively changing the protrusion dimension of the case body from the attachment surface The size change member is opposed to the case body or the base plate, and the protrusion size change member is moved vertically or horizontally to adjust the position of the case body relative to the base plate in the front-rear direction. is there.

  The second invention is the above first invention, wherein the base plate is provided with a plurality of case body mounting portions having screw holes into which a case body fixing screw for fixing the case body is screwed. A screw insertion hole through which the case main body fixing screw is inserted and a lever insertion hole are formed in the case main body, and the protruding dimension changing member is slidably provided on the back side of the case main body, and the protruding dimension changing member And an insertion hole through which the case body fixing screw is inserted, and selectively between the case body mounting portion of the base plate and the screw insertion hole of the case body or to the side of the case body mounting portion. A protrusion dimension changing portion that changes the protrusion dimension of the case main body by being positioned on the surface of the case main body, and a protrusion size changing portion that is slidably inserted into the lever insertion hole of the case main body. It is provided with a lever portion that protrudes to the side.

  Furthermore, a third invention is the above-mentioned second invention, wherein a rear cover having a guide portion for guiding the protruding dimension changing member to the back side of the case body and preventing the case body from falling off is fixed.

In the first invention, the detector is usually mounted with a small projecting dimension with respect to the mounting surface, and the detection element is located near the mounting surface. When it is found that the influence from the mounting surface on the detection element is large, it is necessary to separate the detection element from the mounting surface as far as possible. In this case, when the case body is removed from the base plate and the case body is fixed to the base plate via the projecting dimension changing member, the case body projects forward by the thickness of the projecting dimension changing member to separate the detection element from the mounting surface.
In this case, the protruding dimension changing member is originally assembled to the case body or the base plate. Therefore, when changing the thickness of the detector using the protruding dimension changing member, the external cord is not removed from the base plate even if the case body is removed from the base plate. Work is easy.

  In the second invention, when the protruding dimension changing portion of the protruding dimension changing member is interposed between the case main body mounting portion of the base plate and the screw insertion hole of the case main body, the protruding dimension of the case main body is increased. When the protruding dimension changing portion is positioned on the side of the case main body mounting portion, the screw insertion hole of the case main body approaches the case main body mounting portion, so that the projecting size of the case main body is reduced.

  In the third invention, the guide portion of the rear cover guides and supports the projecting dimension changing member and prevents the rear cover from falling off the case body.

Hereinafter, the present invention will be described in detail based on embodiments shown in the drawings.
FIG. 1 is an external perspective view of an indoor atmosphere detector according to an embodiment of the present invention in a normal mounting state, and FIG. 2 is an external perspective view of the detector in a state where the case body is mounted with a protruding dimension increased. 3 is an exploded perspective view of the detector, FIG. 4 is an exploded perspective view of main components of the detector, FIG. 5 is a rear view of the case body with a protruding dimension changing member attached, and FIG. It is a rear view of the case main body with the dimension changing member and the rear cover attached. 7 is a sectional view showing a state in which the protruding dimension changing member is housed in the base plate, and FIG. 8 is a sectional view showing a state in which the protruding dimension changing member is pulled out from the base plate and slid downward to increase the protruding dimension of the case body. FIGS. 9A and 9B are a diagram showing a protruding dimension of the detector during normal mounting and a diagram showing a state when the protruding dimension is increased.

  In these drawings, the present embodiment will be described with reference to an example in which the present embodiment is applied to an indoor temperature detector 20 that detects indoor temperature.

  As shown in FIG. 3, the indoor-type temperature detector 20 includes a mounting plate 22 fixed to the indoor mounting surface 1 by two set screws 21, and a set screw 23 on the front surface of the mounting plate 22. A base plate 24 fixed by locking means (described later), a case body 26 attached to the front surface of the base plate 24 by four set screws (case body fixing screws) 25 so as to be movable and adjustable in the front-rear direction; The case body 26 includes a front cover 27 that covers the front surface of the case body 26, a pair of left and right protruding dimension changing members 28 that are mounted in the case body 26, and the like.

  The mounting plate 22 is formed in a substantially square frame shape by a metal plate having a thickness of about 1.6 mm, and screw insertion holes 30 through which the set screws 21 are inserted are formed in the center in the height direction on both the left and right sides. A total of four locking portions 31, one on the upper side and three on the lower side, protrude from the inner edge, and a screw hole 32 into which the set screw 23 is screwed is formed on the upper side.

  In FIG. 4, the base plate 24 is composed of a main body 24A made of a synthetic resin and made of a rectangular tube, and an outer flange 24B and an inner flange 24C integrally projecting from the rear opening end of the main body 24A. . Long grooves 33 serving as guide portions that allow the case body 26 to move back and forth are formed on four inner surfaces of the main body 24A facing the upper, lower, left, and right sides, respectively. These long grooves 33 have a front end extending to the vicinity of the front opening end of the main body 24A, and a rear end opening to the rear opening end of the main body 24A.

  The outer flange 24 </ b> B is formed in a quadrangle having substantially the same size as the mounting plate 22. The inner flange 24C is formed in a rectangular shape having a wide width on both the left and right sides and a narrow width on the upper and lower sides, and has a cylindrical case body mounting having screw holes 34 into which the set screws 25 are screwed on both the left and right sides. A total of four portions 35, one for each pair on the left and right, projecting forward integrally along the inner surface of the main body 24A, and having a screw insertion hole 36 through which the set screw 23 (FIG. 3) is inserted on the upper side Similarly, the portion 37 projects integrally toward the front. Cutouts 38 are formed at locations corresponding to the long groove 33 on the four sides of the inner flange 24C. Further, engaging holes 39 into which the engaging portions 31 (FIG. 3) of the mounting plate 22 are respectively engaged are formed on the upper side and the lower side, and the base plate is formed by these engaging portions 31 and the engaging holes 39. Locking means for locking 24 to the mounting plate 22 is formed.

  The case main body 26 is also made of a synthetic resin and is open to the back side, and is formed in a shallow box shape having a size that can be movably fitted in the main body 24A of the base plate 24 in the front-rear direction. A printed wiring board 45 mounted with a temperature detecting element 43 (FIG. 3) is mounted at the center of the front surface of the case body 26, and a modular connector 46 (FIG. 3) is attached at the center of the back surface. Is electrically connected. Further, the modular connector 46 is attached to the distal end of the external cord 6 that is pulled out from the attachment surface 1 and guided forward through the attachment plate 22, the base plate 24, and openings 47, 48, and 49 of a rear cover 70 described later. A modular connector (not shown) is connected. In addition, a total of four screw insertion holes 50 are formed on both sides of the front surface of the case main body 26 in correspondence with the screw holes 34 of the base plate 24. Further, a total of two lever insertion holes 51 are formed in the left and right end portions, one on the left and one on the rear side. The lever insertion hole 51 is a long hole that is long in the vertical direction, and is formed directly below the screw insertion hole 50 on the upper side. In addition, three locking portions 52 and receiving portions 53 for detachably locking the front cover 27 are integrally projected on the upper end and the lower end of the front surface of the case body 26. Further, the rear end surfaces of the upper plate portion, the lower plate portion, and the left and right side plate portions constituting the four sides of the case main body 26 are respectively inserted into the long grooves 33 of the base plate 24 so that the case main body 26 is detached from the base plate 24. An engaging portion 54 for preventing is projecting integrally.

  In FIGS. 5 and 6, the inner side portions of the case main body 26 are respectively formed with storage portions 61 for storing the protruding dimension changing member 28 so as to be movable up and down, and the rear cover is provided inside the storage portions 61. A rectangular frame 62 with which 70 is fitted is integrally projected.

  In FIG. 4 again, the protruding dimension changing member 28 is integrally formed of synthetic resin, and has a plate-like main body 64A extending in the vertical direction and insertion holes 63 through which the set screws 25 are respectively inserted. A pair of projecting dimension setting portions 64B and 64C made of a cylindrical body integrally projecting from the upper and lower ends of one side surface of the main body 64A, and projecting integrally from the middle portion of the main body 64A toward the front. A concave portion 66 is formed between the lever portion 64D and the upper projecting dimension setting portion 64B so that the case body mounting portion 35 of the base plate 24 can enter. The space between the screw mounting portions 64B and 64C is such that the two case body mounting portions 35 and 35 that are spaced apart from each other on the top and bottom of the base plate 24 and the two screw insertion holes 50 and 50 that are spaced apart above and below the case body 26 are formed. It is set equal to the interval. Such protruding dimension changing members 28 are incorporated in the left and right storage portions 61 of the case body 26 so as to be back to back, the lever portion 64D is inserted through the lever insertion hole 51, and the front end portion protrudes forward of the cover body 26. ing.

  4 and 6, the rear cover 70 covers the center of the back surface of the case body 26 by being fitted to the frame body 62 of the case body 26 from the rear, and has screw mounting holes 71 and 72 on the upper and lower sides. Are respectively fixed to the back surface of the case body 26 by two set screws 73 (FIG. 3) inserted through the screw mounting holes 71 and 72. Further, on both the left and right sides of the rear cover 70, a flat guide portion 74 that supports the rear end surface of the protruding dimension changing member 28 so as to be movable up and down and prevents the case body 26 from falling off from the storage portion 61 is integrally projected. It is installed.

  1 to 3, the front cover 27 covering the front surface of the case body 26 is formed in a box shape having a back surface opened by a synthetic resin and having ventilation windows 80 on the upper and lower surfaces and both the left and right sides. An engaging portion (not shown) that engages with the engaging portion 52 (FIG. 4) of the case body 26 is integrally projected.

Next, a procedure for attaching the indoor temperature detector 20 having such a structure to the attachment surface 1 will be described.
First, the mounting plate 22 is fixed to the mounting surface 1 with two set screws 21 (FIG. 3).
Next, the base plate 24 is fixed to the mounting plate 22 by a locking means including one set screw 23, a locking portion 31 (FIG. 3), and an engaging portion 39 (FIG. 4).
Next, the external cord 6 drawn from the attachment surface 1 through the openings 47 and 48 of the attachment plate 22 and the base plate 24 is inserted into the opening 49 of the rear cover 70 and guided to the back surface of the case body 26. Then, a modular jack (not shown) attached to the tip of the external cord 6 is connected to a modular jack 46 (FIG. 5) attached to the center of the back surface of the case body 26.

Next, the pair of left and right protruding dimension changing members 28 are respectively stored in the storage portions 61 of the case main body 26, and the lever portions 64 </ b> D are inserted into the lever insertion holes 51 so as to protrude forward of the case main body 26.
Next, the rear cover 70 is fitted into the frame body 62 of the case body 26 and fixed by the two set screws 73.
Next, the case main body 26 is fitted to the main body 24A of the base plate 24 from the front. At this time, the engaging portion 54 is slidably engaged with the long groove 33 by being elastically deformed inward to prevent the case main body 26 from coming off from the base plate 24 forward.

  When the case body 26 is fitted to the base plate 24, as shown in FIG. 5, the protruding dimension changing member 28 is positioned upward, and the protruding dimension changing portions 64B and 64C are positioned above the upper and lower screw insertion holes 50 and 50, respectively. The recessed portion 66 is made to coincide with the upper screw insertion hole 50. In order to move the protruding dimension changing member 28 upward, the lever portion 64D protruding forward from the lever insertion hole 51 may be moved upward with a finger. When the case main body 26 is fitted into the main body 24A of the base plate 24 in this state, the protruding dimension changing member 28 is housed in the main body 24A of the base plate 24 together with the case main body 26 and the rear cover 70 as shown in FIG. For this reason, the upper and lower projecting dimension changing portions 64B and 64C of the projecting dimension changing member 28 are respectively positioned above the upper and lower case body attaching portions 35 and 35 of the base plate 24, and the upper case body attaching portion 35 is provided. It is inserted into the recess 66. In this state, when the set screw 25 is inserted into the screw insertion hole 50 of the case main body 26 and the insertion hole 63 of the projecting dimension changing member 28 and screwed into the screw hole 34 of the base plate 24, the case main body 26 is attached to the base plate 24. Fixed.

  Thereafter, the front cover 27 is attached to the case main body 26 to complete the operation of attaching the indoor temperature detector 20 to the attachment surface 1. FIG. 9A is a diagram showing the mounting state of the indoor temperature detector 20 at this time, and the protruding dimension H from the mounting surface 1 is, for example, 38.5 mm.

Since it has been found that the thermal influence on the detection element 43 from the mounting surface 1 is large, the protrusion dimension H of the indoor temperature detector 20 is set to H ′ (H <H ′, for example H ′, as shown in FIG. 9B). = 47.5 mm), it becomes necessary to change to the following procedure.
First, the four set screws 25 are removed.
Next, the case body 26 is pulled out in the maximum dimension in front of the base plate 24. When the case body 26 is pulled out, the projecting dimension changing member 28 and the rear cover 70 also move forward together with the base plate 24.
Next, in this state, the lever portion 64D is pulled down by hand to move the protruding dimension changing member 28 downward. When the protruding dimension changing member 28 is pulled down, the protruding dimension changing portions 64B and 64C overlap with the case body mounting portion 35 of the base plate 24 as shown in FIG. In this state, the set screw 25 is inserted into the screw insertion hole 50 of the case body 26 and the insertion hole 63 of the protruding dimension changing member 28 and screwed into the screw hole 34 of the base plate 24. As a result, the case body 26 is fixed to the base plate 24 via the protruding dimension changing member 28, and the protruding dimension of the indoor temperature detector 20 from the mounting surface 1 is changed from H to H ′. FIG. 9B shows this state.

  In such a projecting dimension changing operation, since the projecting dimension changing member 28 is incorporated in the case body 26 in advance, the rear cover 70 is removed from the case body 26 after the case body 26 is removed from the base plate 24, or an external cord. 6 need not be temporarily separated from the case body 26. Therefore, it is possible to quickly and easily change the projecting dimension of the indoor temperature detector 20.

  Even if the protruding dimension of the indoor temperature detector 20 is changed from H to H ′, the protruding dimension changing member 28 itself is between the base plate 24 and the case body 26 and constitutes a part of the case body 26. Therefore, the appearance of the temperature detector 20 is not impaired.

  In the present embodiment, the protruding dimension changing member 28 includes a main body 64A, a pair of protruding dimension changing parts 64B and 64C, and a lever part 64C, and the upper protruding dimension changing part 64B and lever part 64D. However, the present invention is not limited to this, and various modifications may be made. Deformation is possible. For example, the protruding dimension changing member 28 may be formed of a compression coil spring, and the protruding dimension of the case body 26 may be changed by switching between the compressed state and the natural state. Further, the number of projecting dimension changing members 28 is not limited to two, and may be formed in a frame-like body.

  Further, the protrusion dimension changing member 28 is rotatably incorporated into the case body 26, and when the protrusion dimension is changed from H to H ′, the protrusion dimension changing member is rotated to turn the case body mounting portion 35 and the screw insertion hole 50 into You may make it interpose between.

  Furthermore, the protruding dimension changing member 28 is not limited to be incorporated on the case body 26 side, and may be incorporated on the base plate 24 side.

  Although the present invention shows an example in which the present invention is applied to the temperature detector 20 as an indoor atmosphere detector, the present invention is not limited to this and can be used for a gas detector, a smoke detector, a temperature controller, a humidity controller, and the like.

It is an external appearance perspective view at the time of the normal attachment which shows one Embodiment of the indoor atmosphere detector which concerns on this invention. It is an external appearance perspective view of the same detector which shows the state where the protrusion size of the case body was enlarged and attached. It is a disassembled perspective view of the same detector. It is a disassembled perspective view of the main components of the detector. It is a rear view of the case main body in the state where the protruding dimension changing member is attached. It is a rear view of a case main body in the state where a protruding dimension changing member and a rear cover are attached. It is sectional drawing which shows the state which accommodated the protrusion dimension change member in the baseplate. It is sectional drawing which shows the state which pulled out the protrusion dimension change member from the base plate and slid downward in order to enlarge the protrusion dimension of a case main body. (A), (b) is a figure which shows the protrusion dimension of the detector at the time of normal attachment, and a figure which shows a state when a protrusion dimension is enlarged. It is a figure which shows the attachment structure of the conventional temperature detector using a base.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Mounting surface, 6 ... External cord, 20 ... Temperature detector, 22 ... Mounting plate, 24 ... Base plate, 25 ... Set screw, 26 ... Case main body, 27 ... Front cover, 28 ... Projection dimension changing member, 33 ... Long groove 34 ... Screw hole, 35 ... Case body mounting part, 37 ... Base plate mounting part, 50 ... Screw insertion hole, 51 ... Lever insertion hole, 54 ... Engagement part, 61 ... Storage part, 63 ... Insertion hole, 64A ... Main body, 64B, 64C ... Projection dimension changing part, 64D ... Lever part, 66 ... Recessed part, 70 ... Rear cover, 74 ... Guide part.

Claims (3)

In an indoor atmosphere detector comprising a base plate attached to an indoor mounting surface, a case main body attached to the base plate, a detection element assembled to the case main body, and a front cover covering the front surface of the case main body,
The mounted for positional adjustment in the longitudinal direction the casing body relative to the base plate, the case body of the projecting distance by selectively face the two projecting dimension change member for changing the casing body or the from the mounting surface Provided on the base plate ,
An indoor atmosphere detector characterized in that the position of the case main body is adjusted in the front-rear direction with respect to the base plate by moving the protruding dimension changing member in the up-down direction or the left-right direction . The indoor atmosphere detector according to claim 1, wherein
The base plate is provided with a plurality of case body mounting portions having screw holes into which case body fixing screws for fixing the case body are screwed.
In the case body, a screw insertion hole through which the case body fixing screw is inserted and a lever insertion hole are formed, and the protruding dimension changing member is slidably provided on the back side of the case body,
The projecting dimension changing member has an insertion hole through which the case body fixing screw is inserted, or between the case body mounting portion of the base plate and the screw insertion hole of the case body or of the case body mounting portion. A protruding dimension changing portion that changes the protruding dimension of the case main body by being selectively positioned on the side, and a lever that is slidably inserted into the lever insertion hole of the case main body and protrudes to the surface side of the case main body And an indoor atmosphere detector. The indoor atmosphere detector according to claim 1 or 2,
An indoor atmosphere detector characterized in that a rear cover having a guide portion for guiding the protruding dimension changing member to the back side of the case body and preventing the case body from falling off is fixed.

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